An ISP that I do work for recently had an acocunt on their CommuniGatePro server hijacked by a spammer. Of course this got them on the blacklist of AOL, Yahoo and others. There are three inbound Postfix relay servers for blacklisting that are in front of three Barracuda spam filters. I am trying to come up with a way to use the inbound Postfix relay servers for controlling outbound email. Is there a way to limit email from a single sender per day or per hour with Postfix used as a relay? How effective would Postfix/Amavis/Clam/Spamassassin be for stopping abuse?
Regards, David Koski dko...@sutinen.com
